Recommended Uses: The 270 Allen Magnum was designed specifically for the use of hunting medium big game in the 200 to 600 pound class. The 270 A.M. is also the first APS wildcat that offered legit +1000 yard effective range on medium big game animals as it sustains over 1 ton of kenetic energy at 1000 yards. It also retains up to 2300 fps at this range which ensures full bullet expansion and energy transfer. The 270 A.M. is a true all around performer. Its just as at home in a lightweight sporter rifle for packing all day in rough country and hunting out to 700 yards, or as a medium weight rifle for dedicated long range precision big game hunting. While the barrel life of the 270 Allen Magnum is dramatically longer then its smaller Allen Magnum siblings, its still not recommended to use this wildcat as a high volume varmint chambering.

Effective Range: With commerical bullets, the 270 A.M. is best used at ranges from zero to 800 yards on medium size game. For elk hunting it is recommended that range be limited to no more then 600 yards with conventional commerical bullets. Using the 169.5 gr ULD RBBT from Wildcat Bullets, the 270 Allen Magnum offers legit +1200 yard range on medium to heavy deer species and 1/2 mile range on elk size targets.

Pros: Very easy to form brass for, formed brass available through APS with rifle orders, Extremely potent ballistic and terminal performance. Decent barrel life for performance level. Fits in Rem 700 receivers easily and its custom clones.

Cons: Commerical bullets really limit the 270 A.M.s performance potential. Custom 169.5 gr ULD RBBT not easily obtained from Wildcat Bullets but it is still listed as a production item. Relatively limited choice in reloading powders.

257 Allen Magnum

Left to Right: 25-06 Rem, 257 Weatherby Mag, 257 S.T.W., 257 Allen Magnum, 338 RUM (Parent case for 257 A.M.). The 257 A.M., with same bullet weights, produces 500 fps more velocity then the 257 Weatherby and +200 fps more velocity then the 257 S.T.W. Looking at it another way, the 257 A.M. will drive a 156 gr ULD RBBT to the same velocity as a 257 Weatherby with a 120 gr. bullet weight.

Recommended Uses: Big game Hunting only. Not intended for higher volume shooting such as for varmint hunting. Designed to be used on Light to medium big game hunting including pronghorn and smaller deer species and any other animals in this weight class.

Effective range: Lighter bullets are extremely effective on appropriate sized big game out to 600-700 yards. Heavier custom bullets are effective on big game at ranges past 1/2 mile and even up to 1000 yards in good shooting conditions:

Cons: Limited barrel life, cases somewhat involved to form, must use ultra slow burning ball powders. Custom bullets are not currently available at this time from Wildcat Bullets.

6.5mm Allen Magnum

Some of the modern high performance members of the 6.5mm familyLeft to Right: 6.5mm W.S.M., 264 Winchester Magnum, 6.5mm S.T.W., 6.5mm Allen Magnum and 338 Remington Ultra Magnum case which is used to form the 6.5mm Allen Magnum. The 6.5mm A.M. boosts velocity by 200 fps with all bullet weights.

Recommended Uses: The 6.5mm Allen Magnum is designed to be a dedicated hunting round for use on light to medium big game at moderate to long range. With 100 to 130 gr bullet weights, the 6.5mm Allen Magnum is extremely flat shooting but the heavier 140 and 142 grain bullets perform better ballistically at long range. The 6.5mm A.M. is not intended to be used as a high volume varmint round.

Effective Range: When using 100 to 130 grain bullets, the 6.5mm AM can effectively harvest light to medium big game species out to 600-700 yards with easy. With heavier, higher BC bullets, it offers legit 800 to 1000 yard reach on pronghorn to smaller deer species.

Cons: Cases are somewhat involved to form, barrel life is relatively short and suitable reloading powders are somewhat limited.

7mm Allen Magnum

Some of the better known heavy hitters in the 7mm family. Left to Right: 7mm Remington Magnum, 7mm S.T.W., 7mm Remington Ultra Magnum, 7mm Allen Magnum and 338 Lapua Magnum case which is used as the parent case for the 7mm Allen Magnum. Originally designed to drive the 200 gr. ULD RBBT Wildcat Bullet to 3300 fps, the 7mm A.M. far exceeds the performance of all other 7mm magnums on the market today.

Recommended Uses: The 7mm Allen Magnum was the first APS wildcat to step away from the Remington Ultra Magnum parent case in favor of a slightly shorter and fatter design based on the 338 Lapua Magnum parent case. The reasons for this change are for the slightly larger case capacity but mainly due to the dramatically increased strength of the Lapua case allowing it to handle pressures far exceeding anything the RUM case can survice and do so with long brass life with top loads. The 7mm Allen Magnum is also the first APS wildcat that is designed and fully capable of harvesting game up to 1000 pounds at long range. With the use of the 200 gr. ULD RBBT Wildcat Bullet, nothing else will match the ballistic performance of the 7mm Allen Magnum unless you step up to the wildcats based on the 408 Chey Tac parent case.

Using 140 to 160 gr. Accubonds, the 7mm AM is simply amazing on deer size game up to 400 pounds. For light weight sporter rifles, these lighter bullets produce lower levels of recoil yet retain plenty of terminal performance for medium big game hunting.

Effective Range: The 140 gr. and 160 gr. Accubonds are fully capable of cleanly harvesting small and medium big game at ranges up to and even exceeding 800 yards. In ideal conditions these bullets retain plenty of velocity, energy and accuracy to harvest medium game out to 1000 yards.

The 175 gr. Sierra MK, 180 gr. Berger VLD and 200 gr. ULD RBBT Wildcat Bullet are fully capable of harvesting deer size targets at ranges WELL past 1200 yards. Referring to the velocity performance chart above, the 200 gr. ULD RBBT retaines well over 2200 fps and nearly 2200 ft/lbs of energy at 1200 yards!!! While this level of performance is enough to harvest elk size game at this range, it is still recommended that elk size targets be held to 1000 yards max with the 7mm Allen Magnum. This is mainly due to the relatively small frontal area of the 7mm bullet.

Pros: Fully formed brass available from APS with rifle orders. Can be used with powders that are very stable over wide temp changes, Extreme ballistic and terminal performance, limited recoil, relatively short over all length works in standard length receivers and magazine boxes.

Cons: Somewhat limited barrel life (plenty long enough for a career of big game hunting). Large diameter Lapua parent case requires receivers designed for this class of chambering. Best bullet for this chambering is the 200 gr. ULD RBBT which is a custom bullet made by Wildcat Bullets. This bullet is in production at this time but as a custom bullet availability can be a slight issue.

338 Allen Magnum

Left to Right: 338 Allen Magnum and 338 Lapua. The 338 Allen Magnum when loaded with a 300 gr. SMK offers a legit 500 to 600 fps velocity advantage over the 338 Lapua. That with the ability of the XHS rifles to deliever BR class accuracy and you have an extremely pontent extreme range big game chambering.

Recommended Uses: Big Game Hunting ONLY! The 338 Allen Magnum was designed specifically for hunting medium to heavy big game at ranged past 1000 yards. Terminal performance of the 338 Allen Magnum actually improves once targeting ranges extends past 1000 yards with most bullets. This is because the retained velocity has dropped to a level more suitable for most bullet designs and terminal performance is improved with good expansion and much better penetration. The 338 Allen Magnum can be used on light to medium big game as well and will cleanly largest these lighter big game targets at pretty much any range you can accurately place a bullet into the vitals. Where the 338 A.M. really shines is for long to extreme range Elk hunting.

Effective Range: The primary bullets used in the 338 Allen Magnum are the 300 gr. Sierra Matchking and the 300 gr. Berger Hybrid Gen 2 bullets. With these bullets, light, medium and heavy big game can be cleanly harvested out to the stability limits of this wildcat which in most conditions will be in the 2600 to 3000 yard range. That said, APS does not recommend targeting any big game animals past 1 mile (1760 yards) simply because of Time Of Flight for the bullet to arrive on target. This is simply a recommendation but one we have found to be a wise one to follow for long range big game hunting.

Pros: Fully formed, correct headstamped brass available from APS with rifle orders. EXTREME ballistic and terminal performance. BR class accuracy. Extremely Comfortable to shoot in all APS rifles in spite of its size and performance numbers. Pretty much the top of the performance ladder ballistically even including the 50 caliber class weapons.

Cons: Very large chambering requires complete custom receiver designed specifically for this large case design. Rifles are long and heavy starting at 15 lb MINIMUM for single shots, 18-19 pound for standard Xtreme Heavy Sporter Rifles. Care must be taken not to overheat barrels or throat life will be limited.

375 Allen Magnum

Left to Right: 375 Allen Magnum and 338 Lapua. The 375 Allen Magnum loaded with the 350 gr. SMK offers nearly identical trajectory as its 338 caliber sibling out to 1200 yards yet has a significantly larger kenetic energy payload. While it gives up a bit in flexibility with fewer bullet options, it also offers mearsurably longer throat life and more punch on heavy game at extreme range.

Recommended Uses: Big Game Hunting is the major purpose for the 375 Allen Magnum but with the larger bore diameter it also has found some use in extreme range target shooting. Like its smaller caliber brother 338 A.M., the 375 Allen Magnum is extremely effective for big game hunting at long to extreme range. With the larger frontal area and heavier bullet weight, the 375 A.M. is suitable for the heaviest big game animals and its especially suited for hunting elk, moose and similiar size big game at ranges past 1000 yards. It also is well suited for smaller big game species at any supersonic velocity range but it is better suited toward heavier game species.

Effective Range: With its primary bullet, the 350 gr. Sierra Matchking, the 375 Allen Magnum will sustain supersonic velocity to a range of roughly 2800 yards give or take slightly depending on elevation. With the weight and diameter of this bullet, the 375 Allen Magnum will easily harvest medium big game at any supersonic range assuming the hunter has the ability to put the bullet through the vital area of the target animal. Even if bullet expansion is minimal, the 375 caliber projectile is very effective at cleanly harvesting big game because of its large frontal area and large amount of tissue displacement., For heavier game, its recommended to keep shots to to less then 1 mile (1760 yards) simply because of bullet time of flight and not nessesarily because of lack of terminal performance at longer distances.

Cons: Requires custom receivers because of the size and overall length of the 375 A.M. ammunition. Rifles are long and relatively heavy starting at around 16 lbs ready to hunt with. Recoil is noticably heavier then the 338 A.M. but not punishing in any way. Choice of quality long range bullets is relatively limited compared to 338 caliber.

Recommended Uses: The 510 Allen Magnum was designed primarily as a heavy long range and extreme range target and competition wildcat. The goal is to increase the ballistic performance of the 50 BMG by adding velocity to what the parent case can produce. The 510 A.M. does this very well. Velocity gains in the 150 to 200 fps range are not uncommon using same weight bullets. The 750 gr. A-Max is the recommended bullet simply because it has a good BC, its easy to purchase and is generally very user friendly and accurate. The 510 A.M. can also be used very effectively for big and heavy game hunting at pretty much any range you can effectively place your bullets into the vitals of a big game animal. For this secondary purpose of big game hunting, the 750 gr. A-max is a very good choice as it is considered an expanding bullet design which is required by many western states for big game hunting. The 510 A.M. is excessively powerful for any big game hunting but with proper shot placement it is of course fully capable of cleanly harvesting any big game animal on the planet easily and do so with BR class accuracy.

Effective Range: The effective range of the 510 Allen Magnum, much like the 338 and 375 Allen Magnum, is more limted by the shooters ability to shoot a 50 caliber class weapon and read enviornmental conditions more then the performance of the chambering itself. For consistant target shooting, the 510 A.M. will offer sustained supersonic velocity out to slightly over 3000 yards in most elevations and shooting conditions. For big game hunting, the 510 A.M. carries WELL over 1 ton of kenetic energy even out to 3000 yards and with its 0.510" bullet frontal diameter, it has more then enough power to cleanly kill most big game animals at this range. That said, because of the relatively long time of flight of the 510 A.M., it is not recommended to hunt big game at ranges much past 1800 yards simply because of the amount of distance a big game animal can move in the time of flight to reach the target at longer ranges. This is simply a recommendation but one based in alot of experience in the field.

Pros: Extremely accurate, very powerful, great bullets, common powders and Extreme WOW factor!!

2005 marked the start of the Allen Magnum family of wildcats with the 257, 6.5mm and 270 Allen Magnum going from some simple drawings on paper into reality. From the start the purpose of the Allen Magnum wildcats was not to be near the top of the performance ladder in each caliber family but instead to take performance levels to a completely different level of performance. Every member of the ALLEN MAGNUM family of wildcats accomplishes this goal easily from the 257 Allen Magnum that completely outclasses all other 25 caliber magnums to the 338, 375 and 510 Allen Magnum that boose performance to a new level of performance in all of those caliber families. With the Allen Magnums came the label, "Faster, Flatter and Farther then ever before." All of the Allen Magnum wildcats live up to this statement. If your looking for extreme performacne for a big game hunting rifle, you will not find anything that outperforms an Allen Magnum in any given caliber family.